"Everyone always thinks that their political opponents are doing 1984" with the implicit accusation that comparisons are meaningless pabulum.
But, to dismiss such parallels simply because "the other side does it too" means that you need only accuse your opponents of everything that you are guilty of and they can say nothing that cannot be dismissed with this kind of thought terminating argument.
This stance pretends we are in a world with manners and some mutual foundation of respect.